Transformer.



E. 6. RED.

TRANSFORMER.

APPLICATION mm mv. 28. 1913.

Pamfienti July 3, 1917.,

gWITNESSES:

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cular or ant. team here 20 the co SEC 011 E 1 E H mm S E 1 '1 L 9 v "D a higher elevation. The core members 5 and 6 are positioned in the channel of the arm 12 and the core members and l are disposed in the channel of the arm 13, as above mentioned. The sides of the arm 12 are centrally apertured with openings 17 which are alined with the openings 15 in the lower portion of the lock irons 1%, when said lock irons are placed in position. The bol: 16 secures the lock irons to the frame 8 but does not engage the laminations of which the core members 5 and 6 are composed, because of the open space provided therebetween, as a result of the corners of the laminations having been removed.

The end frame 8 is provided with a tapered opening 18 which engages a central pro j, ction 19 on the floor ofthe tank 1. By th means, the transformer is maintained in a fixed position within the tank, and dis arrangement of the elements of the core structure during the handling of the transformer is precluded. Flanges 20, formed on the arm 12,constitute feet by means of which the transformer is firmly positioned upon the engaging surface of the tank bottom, as shown in Fig. 2. Inasmuch as the Weight of the members 5 and 6, which constitutes 7 5 per cent. of that of the core structure, is-centrally supported upon the arm 12, there is no tendency to overbalance the core structure by reason of the laterally projecting members 3 and 4, when the transformer is placed upon a substantially level surface, such as the bottom of the tank.

The upper end frame 9 is provided with a main arm 21 in which is formed a channel to receive the core members 5 and 6 and with a divided arm 22 in which is formed a channel to receive the core meml iers 3 and 4. As explained relative to the lower end frame 8, the core members are positioned in their respective channels, and a bolt 16, projecting through openings 23 in the end frame 9 and the openings 15 in the upper portion of the lock irons 14, insures rigidity to the upper portion of the core structure. In order to maintain the transformer centrally within 'the tank 1, bars 24 extend in radial planes from the end frame 9 to' the corners of the tank 1. 'One end of each of the Z-shaped tic bars 24 is bolted to a plate 25 which-is integral with the end frame 9, and the other Lend is bolted to a lug 26 which is cast in the tank 1, substantially as shown.

The upper end frame 9 is provided with upwardly extending supports 24 to the top of one of which the higlrtension terminal block 10 is secured, and to the top of the other of which the low-tension terminal bracket 11 is secured. Conductors 27 and 28. leading from the terminal member 10 and 11, respectively, project through bushings 29 provided in the walls of the tank, thereby affording means for connecting the hightension and low-tension coils of the transformer to the external apparatus that may be associated therewith.

The web member which extends intermediate to the supports 2%, is provided with an opening which may be engaged by a crane hook in lifting the transformer from the casing. Thus engaged, the lock irons 14 sustain the stresses and strains by reason of the weight of the transformer being imposed thereupon, and, therefore, the transformer may be handled without injury to the coils and without warping the core structure or disarranging its elements.

Inasmuch as various structural modificae 8o 1. A transformer comprising a tubular winding, a plurality of core sections embracing the winding and disposed in substantially radial planes, said. core members being composed of relatively longand relatively short units, the relatively long units being composed of a preponderance of the required magnetizable material, end frames therefor each (idnstituting a plurality of 5 I arms which are provided with channels formed to receive the outer ends of the corresponding magnetizable core members, and lock irons disposed intermediate the adjacent rlittively long core members and extending between the upper and lower end frames.

2. The combination, in a transformer having approximately cylindrical primary and secondary coils, of a'plurality of laminated core members embracing the coils, end frames providing seats for the core members and maintaining the relative positions thereof, lock irons interposed between the respective core members and extending intermediate the end frames, and bolts engaging only the said lock irons and end frames.

3. The combination. in a transformer having approximately cylindrical coils, and relatively large and relatively small core members embracing the coils, of end frames for the core members providing seats whereby the relatively large core members may abut against one another, look irons laterally disposed to the adjacent sides of the relatively large core members, and means firmly securing the saig ock irons to the end frames.

4. The combination with an inclosing casing, of a transformer comprising a tubular winding explurality of core members embracing the winding and disposed in substantially radial planes, top and bottom sibie lifting means, and means independent of said core members. for locking said end frames to each ether, whereby the active portion of the transformer may be iifierl from me 'saiei containing easing.

In testimony whereof, I have hereunto subscribed my name thisfi lth day of- Nov.

EMERSON G. REED. Witnesses:

V17. M. MGCONAHEY, B. B. Hume, 

